Buffing-roll.



No. 700,189. Pa'uanted May 20, |902. A. l. FowLEn.

BUFFING ROLL. (Application mea Aug. 1a, 1961.)

(no Model.)

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UNITED STATES ALERED R. EowLER, 0E CENTRAL EALLs, RHODE ISLAND, lAssIGNoR To A i PATENT OEE-ICE.

UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A

CORPORATION- OF NEW JERSEY.

BUFFlNG-ROLL.

sPEcIrroATIoN forming part of Letters Patent No. 700,189, dated May so,l 1902.

Application filed August 13', 1901. Serial No. '71,89 8. (No model.) I

T0 all whom it may concern:

Be it known that I, ALFRED B.Y FowLER, a citizen of the United States, residing at Oentral Falls, in the county ofProvidence and State of Rhode Island, have invented certain new and useful Improvements in Bufting- Rolls; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to buffngrolls, and more particularly to cutting-rolls which are used to bu the surfaces of the soles and heels of boots and shoes.

The form-of bufiing-roll now most commonly used in the manufacture of boots and shoes consists of a core of wood around which a rectangular sheet of felt is wrapped and perinanently secured thereto by glue or other adhesive, the edges of said sheet extending longitudinally of the roll. The core of the roll is divided longitudinally into two halves, which can be separated, so as to receive between them on one side of the roll the inturned edges of a covering-sheet of abrasive material. The edges of the sheet of felt extend along each side of the slot formed by the separation of the halves of theroll, and in order to prevent these edges from being detached from the roll they are secured thereto by stitching,

which passes through holes in metal plates let into the adjacent faces of the halves of the roll. In the use of this roll it has been found that the break in the peripheralsurface at the point where the edges of the abrasive material are turned in soon causes the felt to be pounded down on each side of the break, so that the roll is no longer cylindrical, and instead of acting continuously on the work delivers a series of blows or chatters. It is therefore necessary to renew the felt covering frequently. Owing to the manner in which the covering is secured to the roll this operation is expensive and consumes considerable time, during which the roll is o ut of use.

Moreover,'few factories are provided with fac cilities for properly applying the covering to the roll, and are obliged to return the roll to the maker.

Many other forms of bufling-rolls have been devised; but so far as I am advised none of these rolls have gone into'general use. In all rolls provided with a covering-pad of felt or other yieldingmaterial with which I am familiar the manner of securing the coveringpad to the core has been such as to render the operation of renewing the covering-pad difficult, the removal of the roll from the machine being necessary in all cases, and often the returnofthe roll to the maker. The life of the covering-pad of any roll is short, as the material of which it is composed soon loses its elasticity and becomes incapable of yielding when an article is brought into contact therewith, and consequently the delay and expense occasioned by the frequent renewal of the covering-pads of rolls as heretofore constructed have been considerable.

The object of my invention is to produce a buffing roll provided with a covering -pad which can be easily and quickly removed from or secured to the core of the roll, whereby the delay and expense heretofore incurred in the renewal of the covering-pad are avoided.

A further object of my` invention is to produce an improved form of covering-pad which can be easily secured tothe core of a buiiingroll, so as to be readily removed therefrom.

Other objects of my invention are to generally improve the construction and arrangement of various parts of a bufng-roll.

With the above objects in view my invention contemplates providing a bufiing-roll comprising a suitable core, with a coveringpad consisting of a sheet of yielding material wound around the core and with means for removably securing the ends of said sheet to the core. In order to cause the adjacent edges of the sheet to lie close to the roll and also to avoid a break in the surface of the covering extending longitudinally of the roll,- the sheet is preferably substantially-rhomboidal in shape, so that-whe'n-wound around the roll the adjacent edges are located in a 9 line extending spirally from one end of the roll tothe other. The sheet is provided at its ends with means whereby it may be removablyv secured to the core of the roll, and these means preferably consist of` thin strips IOO projecting from the ends of the sheet, which are engaged by suitable clamps carried by the core, such clamps constituting the preferred means for securing the ends of the sheet to the roll. The sheet of yielding material is preferably provided with a thin backing-sheet, which may project beyond the ends of the sheet of yielding material to form the strips above referred to.

As regards the features of invention above referred to, the covering of abrasive material may be secured to the roll in any desiredl manner. I prefer, however, to employ clamps mounted in the ends of the roll, the members of which are relatively movable and arranged to clamp the covering of abrasive material between them. The abrasive material is thus held more securely than is the case when a single clamp member arranged to cooperate with the yielding surface of the covering-pad is provided, and the actuating means for the clamps act with certainty to bring the clamping members into engagement. The preferred means for actuating the clamps consist of rings rotatably mounted on the ends of the core, with means for locking the rings after having been moved to actuate the clamps.

The features of invention above referred to are embodied in the best form at present known to me in the bufting-roll illustrated in the accompanying drawings, in whichL Figure l is a view, partly in side elevation and partly in longitudinal section, of the roll and its actuating-shaft. Fig. 2 is a View in end elevation. Fig. 3 is a sectional view on the line 3 3, Fig. 1. Fig. 4 is a view of the sheet which forms the abrasive covering of the roll, and Fig. 5 is a View of the sheet of yielding material which forms the coveringpad of the roll.

Referring to the drawings, the core of the roll consists of a cylinder 1, preferably of thin metal, and end blocks 2, to which the cylinder 1 is secured by screws, as shown. Each end block is bored centrally to receive the shaft 3, to which it is secured by a screw 4.

The sheet of yielding material Awhich forms the covering-pad is indicated at 5. This sheet in the form shown is substantially rhomboidal Vin shape and is provided with a thin backingsheet 6. The covering-pad may be of any suitable material, but is preferably of felt, provided with a backing sheet of canvas. The backing-sheet extends beyond the ends of the sheet 5 to form thin projecting end strips, as is clearly shown in Fig. 5, and these end strips may be and preferably are stiffened and strengthened by being treated with shellac or other suitable substance. In applying the covering-pad to the core of the roll it is wound around the roll, as indicated in Fig. 1, the dotted spiral line indicating the adjacent edges of the sheet of yielding material. `Vlhen so applied, the covering pad fits snugly against the core and the adjacent edges abut, so that the surface is practically continuous.

For holding the covering-pad on the core it is necessary to secure the pad at itsv ends only. The securingmeans shown in the drawings consist of clamps in the form of segmental plates 7, which are removably secured to the end blocks 2 by means of screws S and clamp the projecting end strips of the covering-pad against the end blocks.

' The sheet 7, which forms the covering of abrasive material shown in Fig. 4, is also substantially rhomboidal in shape and is wound around the core of the roll outside of the covering-pad, but in such a manner that its adjacent edges extend spirally around the roll in a' direction opposite to the spiral line formed by the abutting edges of the pad. For securing this sheet to the core a radially-movable clamping member 9 is mounted in each of the end blocks 2 and is arranged to coperate with a stationary clamping member 10. The member 10 extends beyond the periphery of the end block 2 through a notch 1l cut in the projecting edge of the backing-sheet 6 of the pad 5 and projects intoa notch in the end of the pad,below the outer surface thereof. The member 9 is moved inwardly to clamp the covering of abrasive material against the member 10 by mechanism to be hereinafter described, and when so moved is brought below the surface of the roll, as shown in Fig. 1. The abrasive material is thus more firmly clamped than is the case when the movable clamping member coperates with the surface of the yielding covering-pad, and the actuating mechanism acts with greater certainty to impart a movement to the movable clamping member suicient to securely clamp the abrasive material. Alsc the movable clamping member is prevented from accidentally coming in contact with the work or the hand of the operator. For actuating the clamping member 9 a ring l2 is rotatably mounted on a reduced portion of the end block 2 and is held in position by means of a retaining-ring 13. A pin 14 projects from the member 9 through a curved slot 15 in the ring l2, the arrangement being such that the'member 9 is moved outward when the ring is rotated in one direction and is moved inward when the ring is rotated in the opposite direction. As a means for locking the ring in position after having been rotated in adirection to move the clamping member inward, a spring-pressed pawl 16 is pivotally mounted upon the ring and is arranged to engage ratchet-teeth 17, formed on the retaining-ring 13.

Having tlrus indicated the nature and scope of my invention and having specifically described the preferred embodiment thereof, I claim as new and desire to secure by Letters Patentl. A bufing-roll, having, in combination, a core, a covering-pad consisting of a sheet of yielding material wound around the core, and

-means for removably securing the ends of said sheet to the core, substantially as described. 2. A buiiing-roll, having, in combination, a core, a covering-pad consisting of a sheet of ICO IIO

yielding material substantially rhomboidal in shape wound around the core, and means for removably securing the ends of said sheet to the core, substantially as described. 5` 3. A bufng-roll, having, in combination, a core, a covering-pad consisting of a sheet of yielding material substantially rhomboidal in shape provided with thin projecting end strips wound around the core, and clamps engaging lo said end stripsvfor removably securing said sheet to the core, substantially as described. 4. A covering-pad for a bniing-roll consisting of a sheet of yieldingmaterial substantially rhomboidal in shape provided wi th thin 15 projecting end strips, substantially as described.

5. A covering-pad for a hurting-roll consisting of a sheet of yielding material substantially rhomboidal in shape and a thin backfzo ing-sheet projecting beyond the ends of said sheet, substantially asdescribed. j

6. A covering-pad for abutting-roll consisting of a sheet of yielding materiali substantially rhomboidal in shape adapted to be 2 5 wound around the core of a hurling-roll and provided at its ends with means whereby it may be removably secured thereto, substantially as described.

7. A bung-roll, having, in combination, a

core, a covering of abrasive material, a clamp 3o mounted in the end of the core arranged to lclamp the covering of abrasivelmaterial, a

clamp-actuating ring rotatably mounted on the end of the core, and means for locking said ring, substantially as described, 3'5 8. A bufting-roll, having, in combination, a core, a covering of abrasive material, a clamp mounted in the end of the core arranged to clamp the covering of abrasive material, a clamp-actuating ring rotatably mounted on 4o the end of the core, ratchet-teeth on the end of the core and a pawl c arried by said ring arranged to engage the ratchet-teeth,- substantially as described. Y

In testimony Whereofpl aftix my signature 45 in presence of two witnesses.

ALFRED B. FOWLER.

Witnesses:

j FRED O. FISH,

HORACE VAN EvERnN. 

